OP

Quoted from protectors:

Playfield Protectors – Full Protector Set for Ghostbusters available for a limited time.
https://www.playfield-protectors.com/28/Sales-Promotion
Ghostbusters (Limited Edition) | approx $123 (tax free)
This protector set contains the playfield protector and the plastic protector set.
Ghostbusters (Premium) | approx $128 (tax free)
This protector set contains the playfield protector, the plastic protector set and the half circle button protectors.
Ghostbusters (Pro) | approx $128 (tax free)
This protector set contains the playfield protector, the plastic protector set and the half circle button protectors.
A review of the playfield protector (oldie but goodie)
http://www.pinballnews.com/learn/playfieldprotector/index.html
More Infos on our website
https://www.playfield-protectors.com
Full Protector Sets for Ghostbusters, Game of Thrones and The Walking Dead available for limited time.
All these protector sets contain the playfield protector, the plastic protector set and the half circle button protectors (not for LEs)...